(19)

(11)

EP 1 558 418 A1

(12)

(43) Date of publication: 03.08.2005 Bulletin 2005/31 (21) Application number: 03763525.7 (22) Date of filing: 08.07.2003

(51) International Patent Classification (IPC)7: B23B 41/00, F04D 29/44 (86) International application number: PCT/CA2003/001008 (87) International publication number: WO 2004/007130 (22.01.2004 Gazette 2004/04)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR (30) Priority: 15.07.2002 US 194556 (71) Applicant: Pratt & Whitney Canada Corp. Longueuil, Quebec J4G 1A1 (CA)	(72) Inventors: SASU, Ioan Brossard, Québec J4W 2M3 (CA) GENDREAU, Bertrand Ste-Julie, Québec J3E 1N9 (CA) LANOUE, Robert, F. Longueuil, Québec J4L 1K4 (CA) (74) Representative: Leckey, David Herbert  Frank B. Dehn & Co.,European Patent Attorneys,179 Queen Victoria Street London EC4V 4EL London EC4V 4EL (GB)